Jim,
Check with Radio Dan:
http://www.radiodan.com/ted_stuff/landwehr.htm
The schematics can be downloaded at the bottom of the page.
73s,
Alan WA4SCA
<-----Original Message----- <From: amsat-bb-bounces@amsat.org <[mailto:amsat-bb-bounces@amsat.org] On Behalf Of Jim White <Sent: Thursday, June 05, 2014 10:22 AM <To: AMSAT-BB <Subject: [amsat-bb] (no subject) < <I'd appreciate any info on who repairs Landwehr preamps (VHF <and UHF). <Resurrecting mine from 1990 and they are both dead. They have what I <recall to be the classic symptom of a blown GasFET, when you <apply power <you get about 30dB of loss. < <Jim <WD0E <jim@coloradosatellite.com <_______________________________________________ <Sent via AMSAT-BB@amsat.org. Opinions expressed are those of <the author. <Not an AMSAT-NA member? Join now to support the amateur <satellite program! <Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb <